Quenya 

-uva

fill

-uva future tense ending. In avuva, caluva, cenuva, hiruva, (en)quantuva, (en)tuluva, laituvalmet, lauva, maruvan, termaruva, tiruvantes. A final -a drops out before the ending -uva is added: quanta- "fill", future tense quantuva (PE17:68). A verbal stem in -av- may be contracted when -uva follows, as when avuva is stated to have become auva (VT49:13). Origin/etymology of the ending -uva, see VT48:32. In VT49:30, the future tense of the verb "to be" is given as uva, apparently the future-tense "ending" appearing independently, but several other sources rather give nauva for "will be" (see #1).